... automatic three-knife trimmer 三面刀自动切书机 automatic throttle valve 自动节流阀 automatic thyroid retractor 自动甲状腺牵开器 ...
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automatic c throttle valve 自动节流阀
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A control system which USES to control the flat valve of multistage throttle is design in order to establish the foundation for automatic control of multistage throttle during press the well.
设计了一套专门用于控制多级节流管汇液动平板阀的控制系统，主要目的是为多级节流系统在压井过程中实现自动控制奠定基础。
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